Eric Winston vs. Tyson Clabo

Calvin Watkins covers the Houston Rockets and the NBA for ESPN.com. He joined ESPNDallas.com in September 2009. He's covered the Dallas Cowboys and Texas Rangers as well as colleges, boxing and high school sports.

Winston has played with Houston and Kansas City in his career and hasn't missed a start since 2007. Last season, he allowed six sacks according to Stats Inc. Pro Football Focus recorded Winston allowed six quarterback hits and 25 quarterback hurries. He was the ninth-ranked right tackle last season and was given nine positive grades by PFF.

Clabo has played with Atlanta his entire career and has started every game since 2008. In 2012, Clabo allowed six sacks according to Stats Inc. Pro Football Focus recorded Clabo had given up seven quarterback hits and 23 quarterback hurries. There were 11 positive grades for Clabo based on the PFF grading system. Clabo is the fifth-rated right tackle in the NFL according to PFF.

Winston and Clabo have drawn interest from the Cowboys but it doesn't mean either player will sign. Money and availability are the major factors.